Nuclei Questions

A radioactive material has a half-life of $10\text{days}$. What fraction of the material would remain after $30\text{days}$?

The binding energy of deuteron is $2.2\text{MeV}$ and that of ${}_2^4\text{He}$ is $28\text{MeV}$. If two deuterons are fused to form one ${}_2^4\text{He}$, then the energy released is:

In a radioactive material, the activity at time $t_1$ is $R_1$ and at a later time $t_2$, it is $R_2$. If the decay constant of the material is $\lambda$, then:

The radius of Germanium (Ge) nuclide is measured to be twice the radius of ${}_4^9\text{Be}$. The number of nucleons in Ge are:

The mass of a ${}_3^7\text{Li}$ nucleus is $0.042\text{ u}$ less than the sum of the masses of all its nucleons. The binding energy per nucleon of ${}_3^7\text{Li}$ nucleus is nearly:

If the nuclear radius of ${}^{27}\text{Al}$ is $3.6\text{Fermi}$, the approximate nuclear radius of ${}^{64}\text{Cu}$ in Fermi is: